Question

find the cost of painting at the rate of Rs. 5.60 per m^2 on the hemispherical dome of diameter 10m.

Answer 1

here is the answer for ur question

Answer 2

Diameter of hemispherical dome = 10m
Therefore, Radius of hemispherical dome = 10÷2 = 5m
Therefore, Curved surface area of hemispherical dome =
$2\pi {r}^{2}$
$2 \times 22 \div 7 \times {5}^{2}$

$44 \times 25 \div 7$
$1100 \div 7 \: {m}^{2}$
Therefore, Total cost of painting of the hemispherical dome at the rate of Rs. 5.60 per m^2 = Rs.
$1100 \div 7 \times 5.60$
$1100 \div 7 \times 560 \div 100$
$110 \times 8$

= Rs. 880